--- title: "Clean Truck Check Testers in San Diego County, CA (178)" description: "178 CARB-credentialed Clean Truck Check testers in San Diego County, California, across 27 cities. 157 offer mobile testing. Search by city, see phone numbers…" url: "https://ctcfinder.com/testers/san-diego-county/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in San Diego County, California 178 testing businesses in 27 cities; 157 offer mobile testing, 91 do smoke opacity tests, 137 test motorhomes. > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. ## City pages - [San Diego](https://ctcfinder.com/testers/san-diego-county/san-diego/) — 42 listings - [El Cajon](https://ctcfinder.com/testers/san-diego-county/el-cajon/) — 24 listings - [Chula Vista](https://ctcfinder.com/testers/san-diego-county/chula-vista/) — 15 listings - [Escondido](https://ctcfinder.com/testers/san-diego-county/escondido/) — 13 listings - [Lakeside](https://ctcfinder.com/testers/san-diego-county/lakeside/) — 12 listings - [Oceanside](https://ctcfinder.com/testers/san-diego-county/oceanside/) — 9 listings - [Valley Center](https://ctcfinder.com/testers/san-diego-county/valley-center/) — 9 listings - [Ramona](https://ctcfinder.com/testers/san-diego-county/ramona/) — 6 listings - [Santee](https://ctcfinder.com/testers/san-diego-county/santee/) — 6 listings - [Fallbrook](https://ctcfinder.com/testers/san-diego-county/fallbrook/) — 5 listings - [National City](https://ctcfinder.com/testers/san-diego-county/national-city/) — 5 listings - [Vista](https://ctcfinder.com/testers/san-diego-county/vista/) — 5 listings - [San Marcos](https://ctcfinder.com/testers/san-diego-county/san-marcos/) — 4 listings - [Carlsbad](https://ctcfinder.com/testers/san-diego-county/carlsbad/) — 3 listings - [Poway](https://ctcfinder.com/testers/san-diego-county/poway/) — 3 listings ## Alpine - **[Joe's Mobile Carb Certification](https://ctcfinder.com/tester/joes-mobile-carb-certification-alpine/)** — 515 Anderson Rd, Alpine, CA 91901 — (619) 324-9318. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Powerhouse diesel](https://ctcfinder.com/tester/powerhouse-diesel-alpine/)** — 1302 Hillcrest Drive, Alpine, CA 91901 — (619) 733-6535. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Boulevard - **[DL Enterprises](https://ctcfinder.com/tester/dl-enterprises-boulevard/)** — 39718 Old Highway 80, Boulevard, CA 91905 — (619) 438-1014. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Cardiff By the Sea - **[Carb Testing And Compliance](https://ctcfinder.com/tester/carb-testing-and-compliance-cardiff-by-the-sea/)** — 845 Nolbey Street, Cardiff By the Sea, CA 92007 — (442) 322-6796. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Coronado - **[So Cal Trucking](https://ctcfinder.com/tester/so-cal-trucking-coronado/)** — 449 D Ave, Coronado, CA 92118 — (406) 600-4580. Services: mobile testing, OBD testing. ## Del Mar - **[Floor Zero, LLC.](https://ctcfinder.com/tester/floor-zero-llc-del-mar/)** — 13150 Portofino Drive, Del Mar, CA 92014 — (513) 317-6655. Services: mobile testing, OBD testing. ## Encinitas - **[Furgerson's Garage](https://ctcfinder.com/tester/furgersons-garage-encinitas/)** — 807 2nd St, Encinitas, CA 92024 — (760) 436-3337. Services: OBD testing, motorhome testing. ## Jamul - **[Adrian Rocha](https://ctcfinder.com/tester/adrian-rocha-jamul/)** — Jamul, CA 91935 — (619) 836-5930. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Interstate 94](https://ctcfinder.com/tester/interstate-94-jamul/)** — 15616 Lyons Valley Road, Jamul, CA 91935 — (619) 345-1082. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## La Mesa - **[Avalos Mobile Smog Check](https://ctcfinder.com/tester/avalos-mobile-smog-check-la-mesa/)** — 7504 Parkway Drive #109, La Mesa, CA 91942 — (619) 734-6652. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Dekra Services Inc.](https://ctcfinder.com/tester/dekra-services-inc-la-mesa/)** — 9089 Dallas St, La Mesa, CA 91942 — (619) 460-7664. Services: OBD testing. ## Lemon Grove - **[Smog Or Tune](https://ctcfinder.com/tester/smog-or-tune-lemon-grove/)** — 7644 Broadway, Lemon Grove, CA 91945 — (619) 647-3594. Services: OBD testing, motorhome testing. ## San Clemente - **[Rincon Truck Center INC.](https://ctcfinder.com/tester/rincon-truck-center-inc-san-clemente/)** — 114 Rincon Ct, San Clemente, CA 92672 — (949) 492-3520. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## San Ysidro - **[Celcor INC](https://ctcfinder.com/tester/celcor-inc-san-ysidro/)** — 631 E SAN YSIDRO BLVD. SUITE E, San Ysidro, CA 92173 — (619) 419-7082. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Jp Black Smoke Solutions](https://ctcfinder.com/tester/jp-black-smoke-solutions-san-ysidro/)** — 322 S Vista Ave, San Ysidro, CA 92173 — (619) 703-9457. Services: mobile testing, OBD testing. ## Spring Valley - **[Edward Gomez](https://ctcfinder.com/tester/edward-gomez-spring-valley/)** — Spring Valley, CA 91977 — (619) 343-6370. Services: mobile testing, OBD testing. - **[Fleet Emissions Solutions](https://ctcfinder.com/tester/fleet-emissions-solutions-spring-valley/)** — 9096 AVOCADO ST, Spring Valley, CA 91977 — (619) 735-0836. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in San Diego San Diego County includes the Otay Mesa border crossing, California's busiest commercial truck crossing at about one million trucks a year (GSA, 2022). ## Frequently asked questions ### How many Clean Truck Check testers are in San Diego County? CTC Finder lists 178 testing businesses in San Diego County from CARB's public tester list (193 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher. ### Is there mobile Clean Truck Check testing in San Diego County? Yes. 157 listed businesses in San Diego County offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them. ### How much does a Clean Truck Check test cost in San Diego County? Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the [cost guide](https://ctcfinder.com/guide/cost/).